发明名称 |
INDUSTRIAL SALT, AND APPARATUS AND PROCESS FOR PRODUCING INDUSTRIAL SALT |
摘要 |
[Subject] To provide a low price industrial salt by reducing facility and operation costs without electrodeposition and crystallization and through reduction in quantity of chemicals used. [Means for Solution] An industrial salt S obtained by the steps of: extracting a part of combustion gas from a kiln exhaust gas passage running from an inlet end 12b of a cement kiln 12 to a bottom cyclone 13; recovering dust D from the extracted gas G2 and washing recovered dust; and drying a filtrate L1 after the washing in a gas stream. The industrial salt can be obtained by removing a calcium component from the filtrate and drying the filtrate from which the calcium component is removed in a gas stream. Further, from the filtrate can be removed sulfate radical, and drying the filtrate from which the calcium component is removed in a gas stream to obtain the industrial salt. For the drying can be used an exhaust gas discharged from a clinker cooler 12a and a spray drier 43 may be used for the drying. Drying in a stream provides industrial salt whose particle size is larger or equal to 20µm and smaller or equal to 500µm.
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申请公布号 |
EP2347998(A1) |
申请公布日期 |
2011.07.27 |
申请号 |
EP20090825956 |
申请日期 |
2009.04.15 |
申请人 |
TAIHEIYO CEMENT CORPORATION |
发明人 |
TAMURA, NORITOSHI;SAITO, SHINICHIRO;TATSUMI, YOSHINOBU |
分类号 |
C01D1/02;B09B3/00;C01D3/04;C02F1/58;C04B7/60 |
主分类号 |
C01D1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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